Amiga 3000T need help troubleshooting

[tlgrooms]

Back in 2007 I was trying to install OS 4 on my 3000T with Cyberstorm PPC accelerator and Picasso IV. During the process, I restarted the machine (not while it was doing anything) and it failed to boot. Ever since then this is what I have gotten. I tried getting help with it a few times over the years here at Amiga.org and EAB but never was able to figure out why it won't boot. I'm attaching a youtube link of my 3000T when it is powered on. It cycles over and over as seen in the video. The power light flashes 7 times between each cycle and screen is black.

Here are some of the suggestions and things I have tried:

• Battery, no corrosion as it was pulled before it ever went bad.
• I have swapped all socketed chips with a working 3000 Desktop. The chips from the 3000T worked in the 3000 desktop but still had the same problem after swapping the chips with the 3000T. I swapped them back after the test.
• I have pulled all the cards and reset the jumpers to boot without the accelerator, no change.
• I have pulled all the socketed zip memory, no change.
• I have swapped out the ROM chips with the 3000 desktop.
• I wired up an ATX power supply to make sure it wasn't the power supply, no change.
• I came across a new 3000T power supply on eBay and received it yesterday, pulled out the 3000T and tried it, no change.

There is no apparent damage on the board anywhere and like I say, it failed on a restart. It was working perfectly fine until that restart.

If anyone has any suggestions of anything else I might try or knows of anyone who might take a look at it and see if they can fix it I'd sure appreciate the help. I would love to get my 3000T going again. I am located in Arkansas but wouldn't mind driving several hours to meet with someone who would take a look at it and see if they can figure out what's going on with it. Hate to ship it anywhere as the board is huge.

https://www.youtube.com/watch?v=qQtFA8iEVhA

[tlgrooms]

I'm not sure.  I don't have a battery onboard anymore and I didn't have when it went down.

[tlgrooms]

Matt_H

Cannot get into early startup menu or cyberstorm menu.  I can reset the startup process by pressing ctrl-amiga-amiga though.  Otherwise the power light flashes 7 times and then restarts over and over.

It has the onboard 030 and as stated above, I have pulled all cards including the cyberstorm, reset the jumpers for the 030 and still get the same thing.

No hard disk or floppy drives are connected.  It is strictly bare bones.  Although all of the above were in place when this first started happening including the hard disk and floppies, cyberstorm, picasso_iv, etc.

I have double and triple checked the jumper settings including again just now with what don27dog just posted.  Same thing I have and have been trying.

[tlgrooms]

No, floppies do nothing.  There is nothing hooked up to the motherboard at present, no hard drives, no floppies, no cd.  All the socketed memory has been pulled as well as the cyberstorm and picasso iv.  Jumpers reset to 030 setting.  Still getting the same thing.

[tlgrooms]

Thanks I appreciate your trying.

[tlgrooms]

I was able tonight to put in a set of v1.0 Diagroms and this was the result.

https://www.youtube.com/watch?v=3naLuT53w6o

I will be trying to hook up to a pc as soon as I can get one set up with a serial port.

No matter what keys I tried on the keyboard the result was the same as in the video.

[tlgrooms]

Only mod I am aware of is the INT_2 modification and it will work either with or without an accelerator after the mod.

[tlgrooms]

I tried swapping the 4 pal chips and both CIA chips with known working ones from my 3000 Desktop.  No change.
The chips from the 3000T also worked fine in the 3000 Desktop after the swap.

Next, going to try to find a place to purchase a set of v1.2 diagroms and also the cables I need for the serial output from them.

[tlgrooms]

Yes, tried both an ATX power supply with the adapter and a new old stock 3000T power supply.  Both gave same results as original.

[tlgrooms]

Hooked the 3000T up to my 1200 with a null modem cable tonight.  Pretty much the same thing as the video other than an additional line of output at the beginning.

Still was only able to see the menu and the system information options.  Wasn't able to select any of the other menu options.  I tried a couple of different keyboards so it shouldn't have anything to do with them.  See attached...

[tlgrooms]

I can't burn them myself.. Been trying to find someone here in the states who can, so far no luck.  Guess i'll have to order a set from across the pond.

Do you know if version 1.1 of the diagroms will allow you to switch between ntsc/pal with the space bar?  I think that's what version I have, it says 1.0 from the main menu but the serial output is showing 1.1.

Will try hooking the hard drive back up to the built in scsi but i'm pretty sure it has no affect as i've tried it before a long time ago..

[tlgrooms]

I've ordered a set of 1.2.1 diagroms about a week ago.  Had to order them from the UK and I am in the states so waiting on them.

[tlgrooms]

Got the v1.2.1 Diagroms and installed them.  I'm able to run some of the tests now.  See video below.   
https://youtu.be/r9p2CtPoVgU

[tlgrooms]

I have pulled all the socketed memory off of the board before running the above tests.  All the cards, drives and everything else.  It's barebones.  I'll run the tests thru the serial port tonight and post here.  Thanks again for the help and suggestions.

[tlgrooms]

Attached is the link to the serial output from Diagrom 1.2.1. The 3000T only has the onboard ram in it, all other socketed memory has been removed.

I unfortunately don't have a way to burn my own roms. 

https://drive.google.com/file/d/1pmnlP343S1JPgVoClhnrVtaTL2zWdoXa/view?usp=sharing